Solid phenolic resin sand sand construction methods and construction process parameters

Different sand method of construction procedures and parameters are different , here focuses on several commonly used chemical sand oilfield construction procedures and parameters .
Phenolic resin solid construction sand and construction process parameters
( A ) perforating : vacuum perforating hole density of 20 holes / m, pore size of not less than 10mm.
( 2 ) wash well : there is no solid well fracking phase with a plus cleaning liquid clay anti-swelling agent, emulsifier and anti- flushing .
( 3 ) through well : with less than 4-6 mm casing diameter wells regulatory pass through to the lower bound of the following reservoir 20m, no Difficult phenomenon .
Anti ( 4 ) under the sand column : Full Wells once sand , light pipe above the upper boundary of the reservoir was completed in 5 ~ 10m, installed wellhead for construction ; multi- layered reservoir sand Nagai segment , using the first down into the packer , from under the previous paragraph by paragraph, sand , each segment length control wells within 20 m.
( 5 ) being extruded activity Diesel : Diesel ceramic proppant was added 1% of polyoxyethylene alkyl ether -8 active agents, i.e. the activity of diesel oil in an amount of not less per m perforation 500 L, CC 300 L / mim.
( 6 ) being squeezed hydrochloric acid : hydrochloric acid concentration of 5% to 7 % per meter reservoir perforation less than 200 L, displacement 300L/min.
( 7 ) being squeezed diesel : the amount of 2m, displacement 300L/min.
( 8 ) being squeezed phenolic resin solution : oil per meter perforation less than 200 L, displacement 300L/min.
( 9 ) n- extrusion pore former ( diesel ) : the amount of resin in an amount of 2 to 3 times the displacement 300L/min.
( 10 ) n- extrusion curing agent ( HCl ) : HCl concentration of 10% to 12%, an amount of 2 to 3 times the amount of resin , the displacement 300L/min.
( 11 ) are squeezed replace liquid ( diesel ) : All hydrochloride squeeze oil displacement 300L/min.
( 12 ) shut Hou Ning 48h or more.
( 13 ) kill , resin surface exploration drilling plug to artificial bottom.
( 14 ) down into the production string production.

Proppant pressure in the closed state

According to the strength of the proppant , the relative relationship between the hardness , the hardness of the rock wall and the closing pressure (close pressure) , the pressure in the closed ceramic proppant has three states .
1 ) proppant embedment formations . If proppant harder than rock hardness , fracture surface embedded proppant , thereby reducing support crack width, reduce fracture conductivity .
2 ) proppant was crushed. If the hardness is less than the proppant rock hardness and compressive strength of the proppant to be smaller than the closing pressure , the proppant is crushed. This not only reduces the propped fracture width , and because of the mutual -embedded proppant crushing support also reduces the fracture permeability , thereby reducing the fracture conductivity .
3 ) proppant compressive deformation. For toughness well fracking, pressure in the closed first ductile deformation proppant increased bearing area , thereby increasing the bearing capacity without proppant crushing . Thus , although the use of toughness proppant proppant fracture width is reduced , but the broken particles do not exist, so there is still a relatively high fracture conductivity .